4678991 has 8 divisors (see below), whose sum is σ = 4826304. Its totient is φ = 4533760.

The previous prime is 4678979. The next prime is 4679009. The reversal of 4678991 is 1998764.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4678991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4678901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4871 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^4678991 is an apocalyptic number.

4678991 is a deficient number, since it is larger than the sum of its proper divisors (147313).

4678991 is a wasteful number, since it uses less digits than its factorization.

4678991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041.

The product of its digits is 108864, while the sum is 44.

The square root of 4678991 is about 2163.0975474999. The cubic root of 4678991 is about 167.2569103181.

The spelling of 4678991 in words is "four million, six hundred seventy-eight thousand, nine hundred ninety-one".